RSVP from participants

Participants Database isn’t set up to work as an event management app, so you may want to look into a plugin that is desugned for that putpose.

It may be possible do do what you ask, for example, you can set up an email that asks for an RSVP, and have them return to the site to say whether they will attend, but you will have to design that interaction yourself, the plugin isn’t normally set up to do this.

Yu can set up emails to send to participants using the Email Expansion add-on.

Thanks!